D14 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0505590 (HvD14) on barley chromosome 5H encodes the strigolactone esterase D14, a member of the alpha/beta hydrolase fold family with esterase and protein-binding activities. The gene is associated with strigolactone perception and signaling, including cellular response to strigolactone, strigolactone anabolism, and ubiquitin-dependent proteolysis via the SCF complex. HvD14 is linked to shoot morphogenesis, secondary shoot formation, and regulation of meristem organisation. It has been connected to agronomic traits including grain yield, seed-setting rate, plant height, dwarfism, root branching, leaf senescence, flowering time, and responses to drought, heat, nitrogen deficiency, and bacterial blight. The gene is also associated with abscisic acid, cytokinin, jasmonic acid, and gibberellin content, as well as stomatal closure and cuticle development. Studies of related genes in other species link the D14 family to strigolactone perception, branching, and root development.